Growth pruning refers to all kinds of pruning from the spring shoots of lemons to fruit picking. Also divided into summer pruning and flowering pruning. Pruning in summer is mainly based on bud smearing, core removal and short cutting, the main purpose of which is to control the growth potential of its branches and promote the growth and development of fruits. In flowering period, some leafless branches are mainly thinned to reduce the amount of flowers and nutrient consumption, so as to achieve the purpose of fruit preservation. Special attention should be paid to spraying fungicides on the cutting mouth after pruning in the growth period, otherwise it will easily lead to many diseases such as gummosis.
Pruning should start with the shaping of young trees before they bear fruit. Pruning lemon trees should start with shaping young trees before fruiting. When the sapling grows to about 50 cm, the top is cut off and the stem is fixed, and three stout and evenly distributed main branches are cultivated under the cutting. Expand the crown as soon as possible to form a solid skeleton. There should be fewer main branches, more branches and longer distances, and the configuration of main branches and auxiliary branches should be reasonable.
Secondly, after the rod is fixed, the top is removed every time it grows to 20 ~ 30 cm. Promote most dormant buds to be transformed into budding buds and germinate and grow. For summer and autumn shoots without extension branches, except the long branches that should be deleted, they are generally not pruned, so that they naturally branch and become fruiting branches. If the branches are too long in summer and autumn, only 8 ~ 10 leaves are left, which can increase branches, form a crown and bear fruit early.